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Quick connector and checker

a checker and quick connector technology, applied in the direction of hose connections, couplings, pipes, etc., to achieve the effect of easy removal, good appearance or visual quality of the checker installed in the quick connector, and increased design freedom in the layout of piping

Active Publication Date: 2010-03-04
A RAYMOND & CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a quick connector with a checker that can be easily installed and removed without needing a large amount of space around the connector. The checker includes a pair of resilient legs and latching pawls that can be locked onto the connector housing to verify the complete insertion of a mating pipe. The checker can be unlatched and the resilient legs can be removed when the mating pipe is fully inserted. The quick connector also includes a quick connector with a quick disconnect feature that allows for quick disconnection of the mating pipe without needing a separate tool.

Problems solved by technology

However, the checker-installed quick connection device entails a problem that a space is required around the outer peripheral side of the connector housing 220 for allowing the resilient legs 240 of the checker 238 to be exposed on and projected out of the outer peripheral surface of the connector housing 220, and since the checker 238 is removed from the connector housing 220 by pushing spreading the resilient legs 240 radially outwardly, a space is required around the connector housing 220 additionally for spreading apart the resilient legs.

Method used

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  • Quick connector and checker

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0075]In FIGS. 1 to 5, reference numeral 10 indicates a quick connector in a quick connection device reference numeral 12 indicates a mating pipe to be connected with a tube made of resin, etc. for piping, via the quick connector 10.

[0076]The mating pipe 12 is a metal pipe here, and provided with an annular projecting portion 14 on an outer peripheral surface at a position near a leading end thereof.

[0077]Reference numeral 15 indicates a tubular connector body comprising a main body of the quick connector 10. Here, the connector body 15 is entirely made of resin and in a form of an elbow.

[0078]The connector body 15 has a nipple portion (press-fit portion) 16 as a connecting portion to a tube on one axial end thereof, a connector housing 20 on the other axial end thereof, and the connector housing 20 has a retainer holding portion 18.

[0079]Inside the connector housing 20, elastic O-rings 22 as sealing rings are retained together with a resin middle ring 24 and a resin bush 26.

[0080]...

second embodiment

[0142]Next, FIGS. 13 and 14 show the present invention.

[0143]In this embodiment, a connector housing 20 as a whole is provided with a pair of sets of opening portions 74 for insertion of the resilient legs 58, a pair of sets of the latch portions 80, a pair of sets of insertion guides 82, a pair of sets of withdrawal passage ways 84, and a pair of the restraining holes 76 of slit shapes at two positions of the connector housing 20 circumferentially spaced 180° from each other in opposed relation to each other, respectively. In this case, the checker 40 can be inserted in and held within the connector housing 20 at either of positions spaced 180° from each other, in either one of opposite directions.

[0144]So, the checker 40 can be installed in the connector housing 20 selectively in one or the other direction so as to be held in the connector housing 20 at a position that is convenient for removal of the checker 40 during piping work. Thus, removal of the checker 40 can be more facil...

third embodiment

[0145]FIG. 15 shows the present invention.

[0146]In this embodiment, a mating pipe 12 is further provided with another annular projecting portion, namely, secondary annular projecting portion 86 in addition to the above annular projecting portion 14.

[0147]As shown in FIG. 15 (B), the secondary annular projecting portion 86 is fitted in an opening on an axial end of the connector housing 20 for insertion of the mating pipe 12 to restrain the quick connector 10 and the mating pipe 12 from rattling each other, and thus can be achieved an advantage that the quick connector 10 and the mating pipe 12 are connected to each other more stably.

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PUM

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Abstract

In a quick connection device for piping installed with a checker 40, a connector housing 20 of a quick connector 10 is formed with opening portions74 for inserting resilient legs 58 therein through the opening portions 74 in a direction perpendicular to an axis from leading ends of the resilient legs, and inserted portions of the resilient legs 58 are held inside the connector housing 20. And, the resilient legs 58 are resiliently deformed in an axially inward direction by an annular projecting portion on an outer peripheral surface of a mating pipe at insertion of the mating pipe, to unlatch latching pawls 64 of the resilient legs 58 from corresponding latch portions of the connector housing 20, whereby the checker 40 is allowed to be removed out of the connector housing 20.

Description

TECHNICAL FIELD[0001]The invention relates to a quick connector for allowing quick connection of a piping tube and a mating pipe, and a checker to be installed in the quick connector, specifically, to a quick connector used with a checker installed therein for verifying complete insertion of a mating pipe, and a checker used for such quick connector.BACKGROUND ART[0002]For a long time, a resin tube has been widely used for piping for transporting a fuel or other piping.[0003]When such resin tube is used for piping, typically the tube is used in combination with a quick connector for allowing a simple and quick connection with a mating pipe.[0004]In this case, it can be unnecessary to swage a metal fitting on an end portion of a rubber tube for connection of the rubber tube with the mating pipe as in the case that the rubber tube (rubber hose) is used for piping.[0005]With regard to an example of this type of a quick connector, one such example is disclosed, for example, in Patent Do...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F16L55/00F16L37/00
CPCF16L2201/10F16L37/088F16L37/0885F16L37/0841
Inventor ISHIDA, YOSHIMITSUTAKENAKA, YASUKI
Owner A RAYMOND & CO